Been thinking about some things that wifi could provide, and here are some more that I don't believe have been mentioned (though, apologies if they have; I've largely skimmed through this thread but not read every post in detail):
* Online tech support. Suppose you could call JJP, and they could tap right into the diagnostics of your game (with your permission), tell you to try stuff and see the results in real time. I know a lot of experienced owners might not need this, but it could help attract more newbies who know less about pinball repair. Maybe there's even a way for them to get a report of what components are failing, similar to automotive diagnostics. I know a lot of us have had great experiences with JJP via facetime or calls where they are super helpful in trying stuff. This would take it to a new level.
* How about locating the camera at the top of the backbox and not bottom? Angle it so that you can see the whole playfield and allow everyone to record or stream their games if they want. Maybe it won't be equivalent to the quality of a DeadFlip stream, but I wonder if you can get the angle right to allow more people to record their games without a fancy setup.
* Similar to the above, if you had such a camera, how cool would it be to hire a professional player to watch you play live over the internet and give you pointers? I bet there are a number of really good players who would enjoy earning a little extra cash and teaching people to play in the process. I know I wouldn't mind paying for an hour lesson with someone who could watch and give me pro tips to really up my game. (I know some of this you can just do with your own camera or phone with a mount, but this would be built in and allow everyone to have the ability to do it easily . . . again, all dependent upon getting the angle right, if possible).